Computer system capable of operating functions according to a scene change and method thereof

Abstract

A computer system includes an image capturing module for capturing a first image, a scene generating means for generating a background image according to the first image, a scene comparing means for comparing a second image captured by the image capturing module with the background image so as to generate a comparison result, and a control means for controlling a power consumption mode of the computer system according to the comparison result.

1 . A computer system comprising:
 an image capturing module for capturing a first image;   a scene generating means for generating a background image according to the first image;   a scene comparing means for comparing a second image captured by the image capturing module with the background image so as to generate a comparison result; and   a control means for controlling a power consumption mode of the computer system according to the comparison result.   
   
   
       2 . The computer system of  claim 1  further comprising a memory module for storing the background image. 
   
   
       3 . The computer system of  claim 1  wherein the image capturing module comprises a lens for receiving an image, and an image sensor for converting the image into an electrical signal. 
   
   
       4 . The computer system of  claim 3  wherein the image sensor comprises a plurality of charge coupled devices (CCD). 
   
   
       5 . The computer system of  claim 3  wherein the image sensor comprises a plurality of complementary metal-oxide semiconductors (CMOS). 
   
   
       6 . The computer system of  claim 1  further comprising a display module wherein the control means controls the display module according to the comparison result. 
   
   
       7 . The computer system of  claim 1  further comprising a hard disk wherein the control means controls the hard disk according to the comparison result. 
   
   
       8 . A method for controlling a computer system according to a scene change comprising:
 (a) capturing an image;   (b) generating a background image;   (c) comparing the image captured in step (a) with the background image so as to generate a comparison result; and   (d) controlling a power consumption mode of the computer system according to the comparison result in step (c).   
   
   
       9 . The method of  claim 8  wherein step (b) comprises capturing a plurality of background frame images so as to generate the background image according to the plurality of background frame images. 
   
   
       10 . The method of  claim 9  wherein step (b) further comprises calculating an optimum brightness value of the plurality of background frame images so as to generate the background image. 
   
   
       11 . The method of  claim 8  wherein step (c) comprises comparing the image captured in step (a) with the background image so as to generate a first difference and comparing the first difference with a first threshold, and step (d) comprises controlling the power consumption mode of the computer system according to a comparison result of the first difference and the first threshold. 
   
   
       12 . The method of  claim 11  wherein step (d) further comprises controlling the computer system to execute a power saving mode when the first difference is less than the first threshold. 
   
   
       13 . The method of  claim 11  wherein step (c) further comprises comparing the first difference with a second difference generated by comparing a last captured image with the background image, and step (d) further comprises controlling the power consumption mode of the computer system according to the comparison result of the first difference and the first threshold and a comparison result of the first difference and the second difference. 
   
   
       14 . The method of  claim 13  wherein step (d) further comprises controlling the computer system to execute a power saving mode when the first difference is greater than the first threshold and a difference between the first difference and the second difference is less than a second threshold. 
   
   
       15 . The method of  claim 8  wherein step (d) comprises activating a screen saving mode of a display module of the computer system according to the comparison result in step (c). 
   
   
       16 . The method of  claim 8  wherein step (d) comprises shutting down a display module of the computer system according to the comparison result in step (c). 
   
   
       17 . The method of  claim 8  wherein step (d) comprises shutting down a hard disk of the computer system according to the comparison result in step (c). 
   
   
       18 . The method of  claim 8  wherein step (d) comprises activating a standby mode of a hard disk of the computer system according to the comparison result in step (c).